This is what 2A Armament says :



The 2A Armament™ AR10/LR-308/SR-25 Titanium takedown pin set features a through drilled design for maximum weight savings in an AR10/LR-308/SR-25  pin size.   Using certified U.S.A. 6AL-4V Titanium these pins weigh in at 0.25 oz total for both pins combined. The 2A Armament titanium takedown pins are aesthetically pleasing on both our Xanthos receiver sets, as well as other vendors product. These feature a black ion bond for a dark matte finish.


    .278 pin size
    Made from U.S.A. grade 5 6AL-5V titanium
    Weight: 0.25 oz combined
    Through drilled for weight reduction
    Black Ion Bond matte finish.
    Product of the great state of Idaho, MADE IN THE U.S.A.
    SKU (2A-TI-TDP308BLK)


NEW AR10LR-308SR-25 Titanium Takedown Pins (Black)

$47.00 Regular Price
$43.70Sale Price